"All hail to the magnificence of @kevalexanderhair and @candicebanks74 the genius creators of 'KHALEESI WIG' (and not forgetting all the hair on game of thrones for 8 glorious years) for at long last making this magical moment a reality."

Emilia Clarke wearing her Daenerys Targaryen wig in a scene from last season alongside Kit Harington's Jon Snow

Meanwhile, another of the show's stars John Bradley promised the last series of the show will be "monumental."

The actor, who plays trainee Maester Samwell Tarly in the show, told The Huffington Post that directors Miguel Sapochnik and David Nutter will return next season, having helmed some big Game Of Thrones episodes in the past.

"Clearly every single episode of the six you’ve got left in Season 8 is gonna be monumental and needs somebody at the helm who’s done that kind of high-stakes, high-octane direction before for us.”

He said: "I think what we used to call Episode nine in Game of Thrones folklore — the episode when everything comes to a head and you get a lot of spectacular sequences — I think you’re gonna get six ‘Episode 9s’ this year."